GENUINE ECHO HIP MOUNT THROTTLE CONTROL HANDLE FITS PB 500H 900113 756580044223 TUBE 570 BTS TUBE 570 BTS Part#: 537044102 Description: CHAIN TENSIONER Part 900113 (THROTTLE CONTROL KIT HIP MOUNT) Where Used: · 900113 Hip Mount Throttle Control Kit >900113 Hip Mount Throttle Control Kit · PB 500H S N: P01913001001 P01913999999 >RePower Hip Mount Throttle Control Kit · PB 500H S N: P02112001001 P02112999999 >RePower Hip Mount Throttle Control Kit · PB 500H S N: P02311001001 P02311999999 >RePower Hip Mount Throttle Control Kit · PB 500H S N: P31312001001 P31312999999 >RePower Hip Mount Throttle Control Kit · PB 500H S N: P31513001001 P31513999999 >RePower Hip Mount Throttle Control Kit · PB 500H S N: P33011001001 P33011999999 >RePower Hip Mount Throttle Control Kit